The right approach:
In the device manager I have pressed the "Update Driver" with "Unknown Device" on.
Then I've only gone to the list of device drivers, then on "All Devices", the next location (C: \ Program Files \ Microsoft Xbox 360 Accessories \) specified and then select the inf file.
Then XBOX 360 Wireless Receiver selected and fertich.
It worked for me, maybe I could help so one or the other yet.
MfG